"lamellibranch" in the noun sense
1. bivalve, pelecypod, lamellibranch
marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together
"lamellibranch" in the adjective sense
1. lamellibranch, pelecypod, pelecypodous
Source: WordNet® (An amazing lexical database of English)
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